error when renaming artwork

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ArtMap Version: ArtMap-JDK21-3.9.22
Spigot/Paper/Other & version: UniverseSpigot version 1.21.4-DEV-ver/1.21.4-stable@c23beb9 (2025-02-17T12:58:22Z) (Implementing API version 1.21.4-R0.1-SNAPSHOT) Universe-1.21.4-DEV-c23beb9 (MC: 1.21.4)
Protocol Lib version: #739

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Description: cant rename artwork(since we updated to 1.21.4) (also cant save with tool but I believe that has been reported already)
Error (pastebin): https://pastebin.com/ZuDqhai5

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